Matt
 
For Rallying you should keep things pretty simple.  A pair of Hitachi's or a pair of 45mm side draft webers, properly jetted, would be the go for a start.  EFI requires a computer and sensors plus pots of $$$ to set up the tuning.
 
An L20 head is a good option for the bigger valves.
Have the bottom end balanced and you should have a reliable rally motor  putting out around 150 - 180BHP.  Later you may like to fit a stroker crank to get about 2.32L capacity in the L18 Block. This really ups the grunt for rally application.
 
For rallying, motors need to be strong and reliable rather than having huge HP. Brakes, Front struts, Gearboxes and diffs also need to be beefier than stock items.  have fun.
----- Original Message -----
Sent: Thursday, 18 April 2002 19:11 PM
Subject: Rally Engine Advice

Hi Listers,
i'm going to be building an engine for my 180b sss rally car soon & i was wondering if anyone could give me ideas on top of what i already have for it?
Ideas-
L18 block
L18 head ported out
L20b cam, valves etc
looking at either 2 commodore injectors... not sure what model they are going to come off.. but i have been told these are a good idea if they can be adapted ...maybe to a twin hitachi manifold
or just a set of 2 inch su's or 45mm webers ...
... i am still learning stuff about engines cos i dont know too much .. that is why i am asking for some ideas ... so thanks alot for your help..
sorry about the long email
thanx
Matt
 

 

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